Usage

 centrfreq
     [-s % of samples to use for 
           estimating centre
           frequencies<real>]
     [-sigma SigmaX<real> [SigmaY<real>]]
     [-seed random number seed<integer>] 
     [-2mcf]
     imagefile1 [<] imagefile2

-s

Percentage of pixels to use in computation (default 5)

-sigma

Parameter in the Gabor filter

-seed

Pseudo-random number generator seed

-2mcf

Make the output be of the format required by mcf